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Pond-Tipp: Safely through the Winter

Garden-Pond-Tip: Safely through the Winter

Slowly, the days are getting shorter and the autumn season is gradually changing to winter season. During wintertime the fish move to deeper layers of water where they are staying until spring in a kind of hibernation. Their heartbeat slows down to approximately one beat per minute while the metabolic rate comes almost to a complete standstill. Being in hibernation, fish hardly absorb any oxygen and completely renounce any food.

In order to avoid any typical spring diseases the pond inhabitants should be prepared accordingly. The individual proceeding in order to prepare the precious fish for wintertime is easily implemented at low costs.

It is their fat reserves that protect the creatures from cold and physical weakness. These fat reserves should be specifically given before wintertime is starting. Feed the fish by adding small portions several times a day. Make sure that the fish take the food and that there are no remaining particles of fish feed in the water. It is important to administer the required vitamins and minerals during the feeding in order to maintain the special condition. By this means you support the fish to build up their fat reserves, moreover, their metabolism is revitalized. At low temperatures you should only use food which can be easily digested, such as Sanikoi or Staple Prime. Due to the high proportion of wheat germ as well as the added vitamins, this food is perfect for being fed in autumn.

Safely through the Winter

The temperatures in the pond should be checked regularly and if possible, reduced by gradual means. Sometimes the pond inhabitants tend to react in a sensitive way to extreme temperature fluctuations. Even temperature changes of 4°C in the course of 24 hours can be extremely stressful for the creatures. This is why the temperature-regulating measures especially with regard to smaller ponds are important. Smaller ponds tend to cool down rather quickly. Due to their lack of depth it is not ensured that there is a layer with a height of approximately 40 cm and a temperature of about 4°C. It is a fact that at about 4°C the water has its highest density and keeps sinking by its own weight thus ensuring that in a depth of more than 80 cm the survival in winter should be possible without any problems. In a pond volume of more than 30.000 litres, the heat is stored sufficiently in the water and the cooling measurably slowed down. Any intervention is necessary only in extreme weather conditions.

Be careful if the pond pump remains in operation during wintertime. The layers of water are mixed while the protecting layer of water at the pond´s ground is cooled down due to the cold water on the surface. While the formation of ice on the surface can be avoided for a while, the pond inhabitants on the bottom of the pond are freezing to death because the water temperature drops below 4 °C. The flow should be as low as possible in those spots where the pond inhabitants have settled down for wintertime in order to prevent cold water from entering the quiet zone.

During wintertime immersion pumps should be stored protectively against frost. In winter, oxygen produced by e.g. the Canadian waterweed (Egeria densa) and hornwort plants are sufficient for the pond inhabitants in their resting position. It is useful to operate rather an oxydator or a pond ventilator than a pond pump. The pond water is supplied with fine bubbles of oxygen and putrefaction prevented.

Hibernation also means to refrain from any construction work nearby the pond. Otherwise the fish are troubled while their consumption on energy increases which in turn enhances the risk of a weak condition in spring and illness. In case the pond freezes you should avoid to break it open by tapping or the like. You better thaw the ice with a hair dryer or hot water.

In order to avoid an extreme cooling you can cover the pond by using various materials such polystyrene, polyethylene-balls, twin-wall sheets and more. However, the aforementioned measures should only apply for smaller ponds or in extreme weather conditions. In any case make sure that there is a small spot in the pond that remains uncovered. Said small space should be kept free of ice in order to provide the gas exchange. Moreover, the ice-free spot allows the observation of the pond inhabitants during wintertime thus making possible the immediate intervention in the event of any desease that might occur.

A pond heater in combination with a frost guard have proved to be the most effective and economical ones. The frost guard switches on the pond heater when the temperature is about 0°C thus avoiding the total freezing of the pond. Such systems are offered for example by Schego.

If possible, always keep checking the quality of the water during the winter. If the pond has been well maintained and cleaned in autumn there should be no problems in the course of winter. In winter fish should be fed only when there are continuously warm temperatures. Keep in mind that the food, if it is not eaten, could lead to a problem in spring since it affects the water quality.

Jebao Floating Fish Pond Skimmer

Pond Skimmers – Purpose

Caused by their decomposition, leaves, weeds and other debris floating on the surface of the pond water lead to turbidity and moreover promote the growth of algae. Certainly it is possible to remove these impurities with the help of a net from the water´s surface but depending on the season, this method is very time-consuming.

It is far more effective and less time-consuming to use a pond skimmer to do this task. Especially in the autumn season leaves and small twigs are a burden for the pond. Sinking to the pond´s ground they are responsible for the formation of fermentation gases and mud which in the following year leads to an increased growth of algae and green water in the pond.

A pond pump that is connected to the pond skimmer or that is directly installed in the pond skimmer produces a slight current, thus making the water flow towards the pond skimmer.

All dirt particles floating on the surface of the garden pond are sucked in before sinking to the bottom of the pond. Coarse particles accumulate on the pond skimmer´s sieve they can easily and quickly be removed from while cleaning the pond skimmer so that said contaminants do not pollute the pond.
The cleaning should be done regularly so as not to affect the cleaning performance.

There is a difference between a stand skimmer and a floating skimmer.

Stand Skimmer

They are firmly installed in the pond for example by placing gravel inside the stand. The water ring of the pond skimmer that rests on the pond´ s surface easily bridges water level differences of up to 100 mm, so that rain or evaporation do not affect the function of the pond skimmer.

Floating Skimmer

They are floating freely on the water´s surface, thus offering a good possibility to keep clean the large-sized ponds. For ponds that dispose of an extremely large surface it may be necessary to make use of several floating skimmers in order to keep clean the entire surface.

Depending on the type of pond skimmer, it is possible to either pump the water into a pond filter for further purification or to make the water flow directly back into the pond. The pond skimmer provides for an additional enrichment of oxygen in the pond and contributes to reduce the growth of algae.

SunSun Neo Pond Pump

Selection of Pond Pumps – a way to find the suitable pond pump

The selection of the right Pond Pump depends on a variety of factors. On the one side the size of the garden pond is essential, on the other side the field of application plays an important role.

Do you want to operate a pond filter system? Is there a waterfall or a stream run? Do you wish to have a pond skimmer or a water ornament as for example a little fountain or the like?

Apart from that, a pond pump should operate as efficiently as possible with regard to energy, so that unnecessary energy costs can be avoided.
In most cases, the pond pump works throughout the whole year and round the clock so that you should take into consideration to acquire the most energy-saving pond pump when it comes to select the right one.

The capacity of the pond pump must be necessarily adjusted to the size of the pond filter. Any oversized flow rate will result in an overflow of the pond filter which is to be prevented at all costs.Moreover, you should take into account the pond´s circulation cycle as well as the period of time of the pond water in the pond filter.

According to the type of usage, the ideal circulation cycle depends on different factors: the fish population, aquatic plants, the quantity of sunlight or the desired water clarity. It goes without saying that, as the case may be, there are further components of the filter circuit that are to be coordinated, if necessary.

Basically, two distinctions are to be made, in all of which the opinions differ considerably in part.

1. Optimal Circulation of the Pond

The circulation cycle is defined as the time in hours for passing the entire pond contents through the pond filter.

The following information may serve you as a guideline:

Koi pond / Fish pond:

• 1 cycle per 3 hours
• 2 circulations in 1 hour (without plantings and with large fish population)

Garden pond / Plant pond:

Regarding a pond without fish, there is less circulation necessary. One circulation in a day can be taken as a guideline in order to enrich the pond water with oxygen and to keep the water in constant movement.

Swim pond:

In this case the circulation cycle is highly dependent on the planting and the individual claim.
The upper limit is to be made at 1 x in 2-3 hours, the lower limit at “no circulation”.

2. Resting period of the water in the pond filter / Filter volume

SunSun Pond Filter CBF-350CHere, the actual volume of the pond filter used in non-pressurized pond filter systems is interesting to focus on:

Item 50107 – SunSun CBF-350 Bio-Pond Filter = approx. 85 liters of volume
Item 50108 – SunSun CBF-350B Bio-Pond Filter = approx. 170 liters of volume
Item 50114 – SunSun CBF-350C Bio-Pond Filter = approx. 250 liters of volume
Item 50167 – SunSun CBF-550 Bio-Pond Filter = approx. 110 liters of volume

After a period of 2-3 weeks there are nitrifying bacteria that colonize the filter sponges. They need quite a time to act on the water.
The aspirated period of time that the pond pump in usage requires to fill the pond filter completely once a time, should be with the above mentioned filter volumes between 1,5 minutes and 3 minutes.

With regard to a Mini Pond, a pond pump with a circulation capacity up to 1.000 liters per hour is sufficient. In this case it would be helpful for example to use a fountain pump with a filter. Small to medium sized ponds with an approximate size of up to 10 cubic meters require, at a circulations rate of about once a time every 2 hours, a pond pump delivering up to 5.000 litres per hour. In accordance with larger ponds the size of the pond pump is to be adjusted accordingly. Apart from the size of the pond, there are also to be taken into consideration the fish population and the flow rate that the pond pump loses when the water has to be transported from great depth or to higher altitudes. The average and the length of the hose in usage also affect the quantity of water that reaches the pond filter. The indicated values are meant to be a guideline and may help you to find the suitable pond pump for your garden pond.

Fountain pumps are a visual highlight in a garden pond and beyond that enrich the garden pond with oxygen. We also offer fountain ponds that are equipped with additional filters and UVC-clarifiers to the effect that the fountain pump represents a true surplus value for every garden pond.

Sunsun Clarifier CUV-636

In order to ensure a proper function of the pond pumps it is indispensable to clean them regularly. We recommend a weekly cleaning of the pond pumps. For this, the pond pump should be opened in order to remove any dirt stuck on the pump shaft.

For questions with respect to the cleaning procedure please do not hesitate to contact our support team.

Pond Filter Set Wiltec

Installing Instructions Bio Pond Filter Set

Right from the start, you have to place  the Pond Filter  at the location that is provided therefore in your garden. The relocation at a later point of time is not easy due to the heavy weight of the drenched filter materials of the bio pond filter.

The pond filter should be placed in a balanced way, thus ensuring that during the operation there is no water spilling over on the sides. Moreover, by this means it is ensured that during the cleaning process, the coarse dirt drains entirely through the waste outlet instead of remaining in the pond filter due to a sloping position. When deciding about the location, make sure that the pond filter is not exposed to direct sunlight.

We recommend the pond water´s recirculation through a stream run in order to ensure an additional enrichment of oxygen. In case you decide to use a stream run please note that the pond filter has to be positioned above the stream run. As for the recirculation through  a pond tube we advise not to reduce the outlet, if possible. Otherwise there is the risk of a backlog in the pond filter´s canister that under certain conditions makes the filter system overflow.

Assembly UVc Pond Clarifier (optional)

Sunsun Clarifier CUV-636

Remove the UVC Pond Clarifier from the package and check carefully whether there is a damage due to the transportation. A damaged quartz glass or UVC bulb due to transport or falling down  prevents the proper commissioning of the Clarifier.

The assembly of the pond clarifier at the pond filter should be managed by two persons simultaneously. One person slides the clarifier into the pond filter´s two openings provided therefore and fixes it in this position. Now, the other person mounts the pond clarifier´s screw joints on the inside of the pond filter. For details, please have a look at our mounting instruction. When all screw joints are fixed tightly, you can let go of the pond clarifier. Please note the minimum distance of 2 meters to the pond border when the pond clarifier is installed.

Installation Pond Pump

SunSun Neo Pond PumpWhen installing your  Pond Pump, always keep in mind the quality of the pond ground. After making sure that the bottom of the pond is not covered with plant soil, gravel or the like, the pond pump can, without hesitation, be positioned at the lowest point of the pond.

In case there is gravel, plant soil or the like on the pond´s ground, the pond pump should be installed in a heightened position to make sure that it is not clogged. You can make use of a large stone or a plant basket in order to heighten the pond pump´s position. Please connect the pond pump to the pond filter and the clarifier respectively by using a suitable pond tube.

Please do not take the pond filter system out of operation during a longer period of time, otherwise the necessary microorganisms die from lack of oxygen. The pond pump has to be in operation  24 hours in order to achieve an optimal filter result. UVC-Clarifier can be operated individually at hourly intervals, depending on the degree of the pond´s contamination.  In this case, the turbidity of the water should be controlled.